/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.thread;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class SchedulerTest {
private final static String schedulerName = "testScheduler";
private Scheduler scheduler;
@Before
public void before() throws Exception {
scheduler = new Scheduler(schedulerName);
scheduler.start();
}
@After
public void after() throws Exception {
scheduler.stop();
}
@Test
public void testExecutePeriodically() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
scheduler.executePeriodically(new CountDownRunnable(latch), 10);
assertTrue(latch.await(5000, TimeUnit.MILLISECONDS));
}
@Test
public void executeAfterDelay() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
scheduler.executeAfterDelay(new CountDownRunnable(latch), 10);
assertTrue(latch.await(5000, TimeUnit.MILLISECONDS));
}
@Test
public void testExecutePeriodicallyReplace() throws Exception {
final CountDownLatch latch = new CountDownLatch(1);
final CountDownRunnable task = new CountDownRunnable(latch);
scheduler.executePeriodically(task, 500);
scheduler.executePeriodically(task, 500);
scheduler.cancel(task);
//make sure the task never runs
assertFalse(latch.await(1000, TimeUnit.MILLISECONDS));
}
private static class CountDownRunnable implements Runnable {
final CountDownLatch latch;
CountDownRunnable(final CountDownLatch latch) {
this.latch = latch;
}
@Override
public void run() {
latch.countDown();
}
}
}